M A Khan1, Ashutosh Gupta2, T S Ahluwalia3, P S Moulick4, V S Gurunadh5, Sandeep Gupta6. 1. Associate Professor, Dept of Ophthalmology, Armed Forces Medical College, Pune 411040, India. 2. Resident, Dept of Ophthalmology, Armed Forces Medical College, Pune 411040, India. 3. Commandant, Command Hospital (Eastern Command), Kolkata, India. 4. Professor and Head, Dept of Ophthalmology, Armed Forces Medical College, Pune 411040, India. 5. Commandant, Military Hospital Wellington, Tamil Nadu, India. 6. Assistant Professor, Dept of Ophthalmology, Armed Forces Medical College, Pune 411040, India.
Abstract
BACKGROUND: Orthokeratology with reverse geometry contact lens is a non-surgical alternative to conventional contact lenses for correction of myopia. However, the strength of evidence for its efficacy and safety is limited to retrospective studies and only a few prospective studies. This prospective study, the first on Indian subjects, evaluated the outcome of orthokeratology among young myopes. METHODS: Fifty eyes of 25 young myopes (age 19-29 years) with myopia of -1 to 5.0 diopter underwent accelerated orthokeratology using the reverse geometry ortho K - LK lenses for correction of myopia. They were followed up prospectively with weekly vision, refraction, corneal topography, and pachymetry to assess the correction of myopia. RESULTS: The mean Log MAR vision corrected from 0.748 ± 0.225 at base line to 0.025 ± 0.0630 at 12 weeks with 86% achieving 6/6 unaided day time vision. This was associated with significant central corneal flattening and thinning. The lenses were well tolerated with no significant complications. CONCLUSION: Overnight accelerated orthokeratology effectively corrects moderate degree of myopia and provide excellent spectacle free day time vision without any significant adverse effects in the short term.
BACKGROUND: Orthokeratology with reverse geometry contact lens is a non-surgical alternative to conventional contact lenses for correction of myopia. However, the strength of evidence for its efficacy and safety is limited to retrospective studies and only a few prospective studies. This prospective study, the first on Indian subjects, evaluated the outcome of orthokeratology among young myopes. METHODS: Fifty eyes of 25 young myopes (age 19-29 years) with myopia of -1 to 5.0 diopter underwent accelerated orthokeratology using the reverse geometry ortho K - LK lenses for correction of myopia. They were followed up prospectively with weekly vision, refraction, corneal topography, and pachymetry to assess the correction of myopia. RESULTS: The mean Log MAR vision corrected from 0.748 ± 0.225 at base line to 0.025 ± 0.0630 at 12 weeks with 86% achieving 6/6 unaided day time vision. This was associated with significant central corneal flattening and thinning. The lenses were well tolerated with no significant complications. CONCLUSION: Overnight accelerated orthokeratology effectively corrects moderate degree of myopia and provide excellent spectacle free day time vision without any significant adverse effects in the short term.
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